1.5v lithium Rechargeable Battery AA: lithium aa batteries, a new generation of high-performance batteries with long-lasting and effective power, keep 1.5v constant discharge in 3400mAh lithium cell. With no memory effects and low self-discharge, you can store them for a longer period of time. Long Life Lithium Batteries AA Rechargeable: AA 1.5V Lithium rechargeable batteries maintain 80% of capacity after 36 months of non-use, which can maintain the long-lasting performance of the battery itself and reduce the probability of battery damage. Wide application: Rechargeable aa lithium battery, great for use in your household devices, smoke detector, perfect for both high and low drain devices, such as digital cameras, toys, and portable audio players. Warning & Caution!: Please using 1.5V AA AAA lithium battery charger to charge this battery. DO NOT use 1.2V NiMH NiCD battery charger or 3.7V charger to charge it. It's not working for 1.5V battery.